Table 2. Duration of side effects expressed as percentages of permanent and temporary side effects for each surgical intervention.

The table displays the proportion of side effects that were permanent or temporary after each vagus nerve stimulation surgery. This data assesses the persistence of adverse effects following vagus nerve stimulation surgeries and identifies any trends in the duration of side effects over multiple interventions.

Side effect duration	1st operation	2nd operation	3rd operation	4th operation
Permanent	17 (56.67%)	7 (50.00%)	4 (66.67%)	2 (100%)
Temporary	13 (43.33%)	7 (50.00%)	2 (33.33%)	0 (0%)